USA’s Christian Coleman has just run 60 meters in 6.37 seconds evidently breaking the world record formerly held by fellow American Maurice Greene set at 6.39 in February 1998. Coleman broke the 20-year-old record at the Clemson Invitational in South Carolina. The 21-year-old world 4x100m silver medallist has a PB of 9.82 for 100m and 19.85 for 200m.